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How to find and return a duplicate value in array
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a = ["A", "B", "C", "B", "A"]
a.detect{ |e| a.count(e) > 1 }
I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for faster solution? Here you go!
def find_one_using_h...
How to pip install a package with min and max version range?
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321
You can do:
$ pip install "package>=0.2,<0.3"
And pip will look for the best match, ass...
How to print color in console using System.out.println?
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How do I parse command line arguments in Bash?
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What is the best way to get all the divisors of a number?
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为维护国家安全 中国限制出口无人机和高性能计算机 - 资讯 - 清泛网 - 专注...
...展，当然同时也刺激了国产自主计算技术的突破。
7月31日，中国商务部、海关总署发布联合公告，为维护国家安全，自8月15日起，对部分无人驾驶航空飞行器和高性能计算机实施出口管制。
无人驾驶航空飞行器和无人驾驶飞...
What regular expression will match valid international phone numbers?
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\+(9[976]\d|8[987530]\d|6[987]\d|5[90]\d|42\d|3[875]\d|
2[98654321]\d|9[8543210]|8[6421]|6[6543210]|5[87654321]|
4[987654310]|3[9643210]|2[70]|7|1)\d{1,14}$
Is the correct format for matching a generic international phone number. I replaced the US land line centric international access c...
How to trace the path in a Breadth-First Search?
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+50
You sho...
How to calculate date difference in JavaScript?
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Convert Go map to json
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If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)...